We present a theoretical model of photorefractive parametric oscillation that covers, for the
first time, to our knowledge, the occurrence of the whole spectrum of parametric processes …

We present a theoretical model of photorefractive parametric oscillation that is capable of
explaining the occurrence of so-called longitudinal, degenerate, and transversal parametric …

The phase part of the system of equations describing two-wave mixing in a photorefractive
strongly inertial medium is studied analytically and numerically. It is shown that the solution …

We report on the first experimental observation of so-called nondegenerate photorefractive
parametric amplification. We show that due to this effect it is possible for a weakly modulated …

We study theoretically and experimentally the modulational instability of broad optical
beams in photorefractive nonlinear media. The angular dependence of the growth rate of …

In the twenty years since the discovery of the photorefractive effect [4.1], it has proven to be
both a nuisance and an asset to the optics community. Originally, it was labelled" optical …

The transverse instability of counterpropagating waves in nonlinear media with a
photorefractive or Kerr-type nonlinearity is studied. The problem is formulated for a sluggish …

We show that the dielectric grating induced by an external probe in a photorefractive crystal
with the period of the external probe can be unstable against period multiplication. We …

We have theoretically investigated the main features of pulse deceleration and pulse-shape
transformations during phase conjugation in photorefractive nonlinear media. The main …

The formation of patterns in two transverse dimensions in photorefractive two-wave mixing
with a single feedback mirror is investigated theoretically. We perform numerical simulations …